Effect of filter cigarettes on the risk of lung cancer.
D000328:Adult; D000367:Age Factors; D005163:Factor Analysis, Statistical; D005374:Filtration; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012907:Smoking; D013638:Tars / Q000592:standards; D013672:Technology; D013997:Time Factors; D014481:United States
D013638:Tars